<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <meta http-equiv="X-UA-Compatible" content="ie=edge" />
        <title>3D呈现transform-style</title>
        <style>
            body {
                perspective: 500px;
            }

            .box {
                position: relative;
                width: 200px;
                height: 200px;
                margin: 100px auto;
                transition: all 2s;
                /* 让子元素保持3d立体空间环境。
                    注意此属性需要定义在父元素中，但是影响子元素 */
                transform-style: preserve-3d;
            }

            .box:hover {
                transform: rotateY(60deg);
            }

            .box div {
                position: absolute;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background-color: pink;
            }

            .box div:last-child {
                background-color: purple;
                transform: rotateX(60deg);
            }
        </style>
    </head>

    <body>
        <div class="box">
            <div></div>
            <div></div>
        </div>
    </body>
</html>
